Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides a breather valve performance test system, it has solved the problem that present breather valve performance test efficiency is low.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
a breather valve performance test system comprises a test piece tool arranged on a test oil tank, a breather valve arranged in the test piece tool, a vibrating table, a helium mass spectrometer leak detector, an oil station and a gas station;
the test oil tank is fixed on the vibrating table;
The test piece tool comprises a test piece mounting seat, a test air pipe, a first pressure sensor, a displacement bracket, a sliding rail, an angle sensor, a hoop, a sliding block and a displacement sensor;
the test piece mounting seat is provided with an inner hole for accommodating the breather valve, the test piece mounting seat is fixed on the test oil tank in a sealing way, the breather valve is arranged in the test piece mounting seat, one side of the test piece mounting seat is provided with an oil inlet joint communicated with the inside of the test oil tank, the test oil tank is provided with an oil return joint, one side of a joint between the breather valve and the test piece mounting seat is provided with a leakage detection joint, and the leakage detection joint is connected with the helium mass spectrometer leakage detector;
the upper end of the breather valve is in sealing connection with a test air pipe, an air inlet joint, an air outlet joint and a pressure-taking joint are arranged on the test air pipe, and the pressure-taking joint is connected with a first pressure sensor;
the displacement bracket is fixed on one side of the test piece mounting seat, a vertical sliding rail is arranged on the displacement bracket, a rotating part of the angle sensor is fixed with the test air pipe and the breather valve, a fixed part of the angle sensor is fixed with the sliding block through the anchor ear, the sliding block is matched with the sliding rail, the displacement sensor is fixed on one side of the test piece mounting seat, and a feeler lever of the displacement sensor is contacted with the upper surface of the breather valve;
The oil station comprises an oil tank, an oil supply pump, an oil return pump, a mass flowmeter and a pressure regulating valve, wherein the feeding end of the oil supply pump is connected with the oil tank, the discharging end of the oil supply pump is connected with an oil inlet joint through an oil supply pipeline, the feeding end of the oil return pump is connected with the oil return joint through an oil return pipeline, the discharging end of the oil return pump is connected with the oil tank, the mass flowmeter is arranged on the oil supply pipeline, and the oil supply pipeline is connected with the oil return pipeline through a three-way pressure regulating valve;
the air station comprises an air compressor, a silencer, an air flowmeter and an air pressure regulating valve, wherein the air compressor is connected with an air inlet joint through an air supply pipeline, an air outlet joint is connected with the silencer through an air outlet pipeline, the air supply pipeline is provided with the air flowmeter, and the air pressure regulating valve is arranged between the air supply pipeline and the air outlet pipeline to be connected.
As a preferable example, the oil feed pump discharge end is also provided with an oil return manual valve, and the oil feed pump discharge end is directly connected with the oil tank through the oil return manual valve.
As a preferable example, the oil supply pipeline is provided with a first electric regulating valve and a second pressure sensor.
As a preferred example, the oil return pipeline is provided with a third pressure sensor and a temperature sensor.
As a preferable example, the air supply pipeline is provided with a second electric regulating valve, a manual control valve and a fourth pressure sensor.
As a preferable example, the exhaust pipeline is provided with a third electric regulating valve and a fifth pressure sensor.
As a preferable example, the two ends of the air pressure regulating valve are respectively connected with the air supply pipeline and the air exhaust pipeline through regulating pipelines, and the sixth pressure sensor is arranged on the regulating pipelines.
The beneficial effects of the invention are as follows:
(1) By adopting the test system, the closing height, the pressure loss, the leakage quantity, the reopening pressure, the blocking flow, the air tightness, the closing angle, the liquid carrying quantity and the reverse flow of the breather valve can be comprehensively detected, the integration level is high, the test is convenient, and the test efficiency is greatly improved;
(2) The oil station, the gas station and the vibrating table which are convenient to control are provided, and various environments required by the breather valve are simulated, so that the test result is more accurate and comprehensive.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a test tank and a test piece fixture;
FIG. 3 is a schematic diagram of a partial enlarged structure of a test piece tool;
FIG. 4 is a schematic diagram of the structure of an oil station;
fig. 5 is a schematic diagram of the structure of the air station.
In the figure: the test piece tool 2, the test piece mounting seat 21, the oil inlet joint 211, the oil return joint 212, the leak detection joint 213, the test gas pipe 22, the gas inlet joint 221, the gas outlet joint 222, the pressure taking joint 223, the first pressure sensor 23, the displacement bracket 24, the slide rail 25, the angle sensor 26, the anchor ear 27, the slide block 28, the displacement sensor 29, the breather valve 3, the vibration table 4, the helium mass spectrometer leak detector 5, the oil station 6, the oil tank 61, the oil supply pump 62, the oil return pump 63, the mass flowmeter 64, the pressure regulating valve 65, the oil supply pipe 66, the oil return pipe 67, the gas station 7, the air compressor 71, the muffler 72, the air flowmeter 73, the gas pressure regulating valve 74, the gas supply pipe 75, the first electric regulating valve 81, the second pressure sensor 82, the third pressure sensor 83, the temperature sensor 84, the second electric regulating valve 85, the manual control valve 86, the fourth pressure sensor 87, the third electric regulating valve 88, the oil return manual valve 89, the fifth pressure sensor 90, the sixth pressure sensor 91, the monitoring table 10, and the pressure scanning valve 11.
Detailed Description
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-5, a breather valve performance test system comprises a test piece tool 2 arranged on a test oil tank 1, a breather valve 3 arranged in the test piece tool 2, a vibrating table 4, a helium mass spectrometer leak detector 5, an oil station 6 and a gas station 7;
The test oil tank 1 is fixed on the vibrating table 4;
the test piece tool 2 comprises a test piece mounting seat 21, a test air pipe 22, a first pressure sensor 23, a displacement bracket 24, a sliding rail 25, an angle sensor 26, a hoop 27, a sliding block 28 and a displacement sensor 29;
The test piece mounting seat 21 is provided with an inner hole for accommodating the breather valve 3, the test piece mounting seat 21 is fixed on the test oil tank 1 in a sealing way, the breather valve 3 is arranged in the test piece mounting seat 21, one side of the test piece mounting seat 21 is provided with an oil inlet joint 211 communicated with the interior of the test oil tank 1, the test oil tank 1 is provided with an oil return joint 212, one side of a joint between the breather valve 3 and the test piece mounting seat 21 is provided with a leak detection joint 213, and the leak detection joint 213 is connected with the helium mass spectrometer leak detector 5;
The upper end of the breather valve 3 is in sealing connection with the test air pipe 22, the test air pipe 22 is provided with an air inlet joint 221, an air outlet joint 222 and a pressure-taking joint 223, and the pressure-taking joint 223 is connected with the first pressure sensor 23;
The displacement bracket 24 is fixed on one side of the test piece mounting seat 21, a vertical sliding rail 25 is arranged on the displacement bracket 24, a rotating part of the angle sensor 26 is fixed with the test air pipe 22 and the breather valve 3, a fixed part of the angle sensor 26 is fixed with a sliding block 28 through a hoop 27, the sliding block 28 is matched with the sliding rail 25, the displacement sensor 29 is fixed on one side of the test piece mounting seat 21, and a feeler lever of the displacement sensor 29 is contacted with the upper surface of the breather valve 3;
As shown in fig. 1 and 4, the oil station 6 comprises an oil tank 61, an oil supply pump 62, an oil return pump 63, a mass flowmeter 64 and a pressure regulating valve 65, wherein the feed end of the oil supply pump 62 is connected with the oil tank 61, the discharge end of the oil supply pump 62 is connected with an oil inlet joint 211 through an oil supply pipeline 66, the feed end of the oil return pump 63 is connected with an oil return joint 212 through an oil return pipeline 67, the discharge end of the oil return pump 63 is connected with the oil tank 61, the oil supply pipeline 66 is provided with the mass flowmeter 64, and the oil supply pipeline 66 and the oil return pipeline 67 are connected through a three-way pressure regulating valve 65;
as shown in fig. 1 and 5, the air station 7 includes an air compressor 71, a muffler 72, an air flow meter 73, and an air pressure regulating valve 74, the air compressor 71 is connected to an air inlet joint 221 through an air supply pipe 75, an air outlet joint 222 is connected to the muffler 72 through an air outlet pipe 76, the air flow meter 73 is provided on the air supply pipe 75, and the air pressure regulating valve 74 is provided between the air supply pipe 75 and the air outlet pipe 76.
The discharge end of the oil feed pump 62 is also provided with an oil return manual valve 89, and the discharge end of the oil feed pump 62 is directly connected with the oil tank 61 through the oil return manual valve 89.
The oil supply pipe 66 is provided with a first electric control valve 81 and a second pressure sensor 82.
The oil return pipe 67 is provided with a third pressure sensor 83 and a temperature sensor 84.
The air supply pipe 75 is provided with a second electric control valve 85, a manual control valve 86, and a fourth pressure sensor 87.
The exhaust pipe 76 is provided with a third electrically operated valve 88 and a fifth pressure sensor 90.
The air pressure regulating valve 74 is connected at both ends thereof to the air supply pipe 75 and the air discharge pipe 76 via regulating pipes (not shown) provided with a sixth pressure sensor 91.
The angle sensor 26, the displacement sensor 29, the mass flow meter 64, the air flow meter 73, the first pressure sensor 23, the second pressure sensor 82, the third pressure sensor 83, the temperature sensor 84, the fourth pressure sensor 87, the fifth pressure sensor 90, and the sixth pressure sensor 91 are commercially available products.
Wherein:
the angle sensor 26 measures the breather valve rotation angle;
the displacement sensor 29 measures the breather valve closing height;
The mass flow meter 64 measures the amount of the pumped oil of the feed pump 62;
the air flow meter 73 measures the flow rate of the pumped gas;
The six pressure sensors respectively measure the pressure values at all positions;
the temperature sensor measures the return oil temperature.
The pressure regulating valve 65, the air pressure regulating valve 74, the oil return manual valve 89, the first electric regulating valve 81, the second electric regulating valve 85 and the third electric regulating valve 88, and the manual control valve 86 are all commercially available products.
Wherein:
The pressure regulating valve 65 gives the oil pumped from the oil feed pump 62 to the oil return pipe 67 to regulate the oil pressure pumped into the test oil tank 1;
the air pressure regulating valve 74 gives the air distribution portion pumped out from the air compressor 71 to the exhaust duct 76 so as to regulate the pumping air pressure;
the return oil manual valve 89 can manually switch the oil feed pump 62 to the completely disengaged state from the oil feed pipe 66;
The first electric regulating valve 81 can provide a hardware basis for automatic oil circuit control;
The second electric regulating valve 85 and the third electric regulating valve 88 can provide a hardware basis for automatic gas circuit control;
the manual control valve 86 manually controls whether the air compressor 71 is connected to the air supply duct 75.
Helium mass spectrometer leak detectors are commercially available products that use helium as a leak indicator gas and detect the helium with a gas analyzer to detect the leak. The gas is sprayed onto a container to be inspected, which is connected with a gas analyzer (which is adjusted to an operating state of reacting only to helium), and if the container has a leak, the analyzer reacts to the leak, so that the position and the size of the leak can be known. During the detection, the air inlet of the air compressor 71 of the air station 7 is connected with helium, the helium is pumped into the test oil tank 1, and then the connection between the breather valve 3 and the test piece mounting seat 21 is detected.
Working principle:
by adopting the test system, the closing height, the pressure loss, the leakage quantity, the reopening pressure, the blocking flow, the air tightness, the closing angle, the liquid carrying quantity and the reverse flow of the breather valve 3 can be comprehensively detected, the integration level is high, the test is convenient, and the test efficiency is greatly improved; the oil station 6, the gas station 7 and the vibrating table 4 which are convenient to control are provided, and various environments required by the breather valve 3 are simulated, so that the test result is more accurate and comprehensive.
Examples
(1) Measuring the closing height and the closing angle of the breather valve 3: when the breather valve 3 is fully opened, the initial angle and the height are recorded by the angle sensor 26 and the displacement sensor 29, respectively; the breather valve 3 is rotated to drive the movable part of the angle sensor 26 to rotate together, and after the breather valve 3 is completely closed, the closing height and the closing angle value of the breather valve 3 are obtained by comparing with the initial value, so that the measurement is completed;
(2) The internal and external pressure of the breather valve 3 is measured, oil or gas is introduced and extracted into the test oil tank 1 through the oil station 6 and the gas station 7, and various internal and external pressure change conditions are simulated, so that the pressure loss of the breather valve 3 is inspected, the leakage quantity is measured, the pressure is re-opened, the flow is blocked, the air tightness, the liquid carrying quantity and the reverse flow are inspected. Specifically, the leakage amount is detected by the helium mass spectrometer leak detector 5, and the six pressure sensors collect the pressure and the pressure difference of the corresponding test contents, and the mass flowmeter 64 and the air flowmeter 73 collect the flow rates of oil and air respectively;
(3) The various parameter changes under vibration conditions are measured, the vibrating table 4 is started, various vibration conditions are simulated, and various sensor data are obtained for subsequent analysis.
Since multiple pressure value detection is employed in this scheme, multiple channel pressure scan valve measurements 11 are used in order to detect multiple pressure conditions simultaneously. The pressure scanning valve 11 is usually used in multiple channels, the pressure scanning valve 11 usually uses one pressure sensor in multiple channels, and the pressure of different channels is acquired by switching at different moments, so that the switching speed is very fast, and the pressure of multiple channels can be conveniently obtained 'simultaneously'.
For the convenience of monitoring, a monitoring table 10 is provided, and the monitoring table 10 displays data such as leakage conditions detected by the helium mass spectrometer leak detector 5, temperature, closing angle, closing height and the like, and data such as pressure test results of the pressure scanning valve 11 in a concentrated manner.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention, which is defined in the claims. The scope of the invention is defined by the appended claims and equivalents thereof.